did you know that political affiliation is the most common shared trait among marital partners, than religion? so my thinking is they push it out, on things like what do you think about gun control and abortion? that type thing. >> okay, so what about families, marriages, we have james carville and mary matalin, what about where they embrace different parties? does it happen a lot? and how do they resolve it? do they just live with it? >> well, it is actually rare, it is one of the most common things that couples share as a political affiliation, it has been suggested if they don't talk about it in the dating affiliation, it could be tough. and the conservative may just want to get divorced after that fight, and the liberal doesn't, because there seems to be more divorces. but the question people ask, if liberals -- will they become extinct, the conservatives generally acquire their rank through birth. but as people become more mobile, they move to pursue careers, get exposed, they become more liberal. so as a result, liberals acquire their folks through conversion, they convert to liberalism